Steam-engine



(No Model.)

' W. G. KELLY.

STEAM ENGINE.

No, 547,581. Patented Oct. 8, 189,5.

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UNITE STATES 1 PATENT QFFICE.

WALLACE C. KELLY, OF HASTINGS, MICHIGAN.

STEAM-ENGINE.

SPECIFICATION forming partfof Letters l atent No. 547,581, dated October8, 1895. Appli n filed May 31, 1895-" Serial No. 551,056. (No model.)

To all whom it may concern;

Be it known that I, WALLACE O. KELLY, a citizen of the United States,residing at Hastings, in the county of Barry and State of Michigan, haveinvented certain new and useful Improvements in Steam-Engines; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to improvements in steam-engines, and its objectisto provide the same with certain new and useful features hereinaftermore fully described, and particularly pointed out in the claims,reference being had to the accompanying drawings, in which 7 Figure 1 isa longitudinal vertical section on the line 1 1 of Fig. 2 of a deviceembodying my invention. Fig. 2 is a transverse vertical section of thesame on the line 2 2 of Fig. 1.

Like letters refer to like parts in both of the figures.

AA are the steam-chests, connected by ports A A to the respective endsof the rectangular working chambers B B.

A" A" are suitable valves operated by any suitable means to admit steam'to said chambers at proper intervals.

The inner ends of the chambers B B are open into the opposite'sides of atransverse cylindrical crank-chamber B, in each end of which chamber arethe crank-wheels H H, mounted on the inner ends of the shafts I I andhaving their opposing faces in the plane of the sides of the workingchambers B B.

G is a crank-pin provided with a sleeve F.

E E are oppositely-extended connectingrods, journaled on the crank-pin Gat their adj acent ends and pivoted to rectangular pistons D D at theirouter ends. Said pistons move longitudinally in the chambers B B and 0perate at proper periods to close and open ports 0 0, extending fromsuitable places in the side of said chambers B B to the opposite sidesof the crank-chamber B. The connecting-rods E E are rectangular incross-section and their opposite sides fit closely against the oppositefaces of the wheels H H and the sides of the chambers B B, thuspreventing the passage of steam from one side of said connectingrods tothe other side of the same and dividing the chamber into twocompartments. A port J is provided near the periphery of one or both ofsaid crank-wheels, which connects the interior of said crank-chamberwith an annular port within. the annular head of the same. L is anexhaust-port extending from said annular port to the open air orelsewhere, as convenient.

The operation of my device is as follows: The valves A" are adjusted toalternately admit steam to the respective chambers B B as the pistons DD respectively reach the outer ends of the said chambers, and to cut offthe steam before said pistons open the ports 0 O, which ports when soopened permit the steam toflow into the crank-chamber and exert lateralpressure on the connectingrods E E, this pressure being appliedalternately at each side of the same. As the port J passes theconnecting-rods E E it alternately connects the spaces at each side ofsaid connecting-rods with the annular port K, said port J being solocated as to exhaust steam from one side of theconnecting-rods whilesteam is permitted to act against the other side of the same. I thus usethe steam twice, first against the pistons in a horizontal direction andthen vertically against the connecting-rods. I thus secure a veryconstant pressure upon the crank at all times and high economy of steam.

I do not limit this method of exhausting the steam to the doubleconstruction shown. It will operate equally as well in conj unction withbut one steam-chest, valve, working chamber, piston, and connecting-rod.

What I claim is- 1. In a steamengine having a cylinder, crank chamber,piston, and crank wheel, a port in said crank wheel, a port in the headof said crank chamber, traversed by the port in said wheel, and anexhaust port from the port in said head, substantially as described.

2. In a steam engine, a crank chamber, a crank wheel in the end of saidchamber, a working chamber open to said crank chamber at one end, apiston traversing the working chamber, a connecting rod dividing saidcrank chamber into two separate steam chambers, a port in said crankwheel, and a port in the head of said crank chamber having an exhaustport, substantially as described.

3. In a steam engine, a cylindrical crank" in one of said crank wheels,an annular port in the head of the crank chamber and opposite the portin said wheel and an exhaust :5 port from said latter port,substantially as described.

In testimony whereof I alhx my signature in presence of two witnesses.

' WALLACE C. KELLY.

Witnesses:

T. J. BRASSEAU, WM. H. STEBBINS.

